Adjusting mechanism for sheet-mills.



No. 758,003 PATENT D APR. 19, 1904, S. B. ELY, H. H. ANDERSON & w. w. SLIGKH ADJUSTING MECHANISM FOR SHEET MILLS.

APPLICATION FILED DEC. 14. 1903.

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PATENTED APR. 19, 1904. s. B. ELY, H. H. ANDERSON & W. w. SLICK. ADJUSTING MECHANISM FOR SHEET MILLS.

APPLICATION FILED DEO.14. 1903.

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UNITED I STATES Patented April 19, 1904.

PATENT OEEIcE.

SUMNER B. ELY, OF ALLEGHENY, AND HARRY H. ANDERSON AND WILLIAM W. SLICK, OF PITTSBURG, PENNSYLVANIA, ASSIGNORS TO AMERICAN SHEET STEEL 00., OF NEW YORK, N. Y., A CORPO- RATION OF NEW JERSEY.

ADJUSTING MECHANISM FOR SHEET-MILLS.

SPECIFICATION forming part of Letters Patent No. 758,003, dated April 19, 1904,

Application filed December 14, 1903. Serial No. 185,078. (No model.)

To all whom, it may concern.-

Be it known that we, SUMNER B. ELY, a resident of Allegheny, and HARRY H. ANDERSON and WILLIAM W. SLIoK, residents of Pittsburg, in the county of Allegheny and State of Pennsylvania, have invented a new and useful Improvement in Adjusting Mechanism for Sheet-Mills; and we do hereby declare the following to be a full, clear, and exact description thereof.

Our invention relates to mechanism for adjusting the rolls of metal-rolling mills; and its object is to provide mechanism for this purpose whereby one of the screws can be adjusted independently of the other and whereby it is possible to disengage both pawls from their toothed wheels by the mere act of moving the operating-lever.

In many rolling-mills, and especially those for rolling sheet metal, it is the practice to adjust the top roll by means of screws having attached to their upper ends toothed wheels, which are engaged by suitable pawls mounted to swivel with reference to the screws. An operating-lever is connected to one of these pawls, and the two pawls are suitably connected, so that by moving the operatinglever both pawls will be simultaneously moved to turn the screws. W'hen it desired to adjust the top roll to a considerable distance, it is necessary to disengage both pawls from their toothed wheels and move them backwardly over the same and engage fresh teeth on the wheels. Prior constructions are such that it requires two men to disengage the pawls from their toothed wheels, it not being possible by the disengagement of one pawl from its toothed wheel to thereby also disengage the other pawl from its wheel.

One of the objects of our invention is to so construct adjusting mechanism for rolls that the mere act of disengaging one of the pawls from its toothed wheel will also cause the disengagement of the other pawl from its toothed wheel, so that both of said pawls can by a single operation be moved backward to take a fresh grip on their toothed wheels.

Another object of our invention is to so construct this mechanism that one of said pawls can be disengaged from its toothed wheel without disengaging the opposite pawl from its wheel, thus enabling one of the screws to be turned without turning the other screw in order to adjust one end of the roll without adjusting its opposite end.

In the accompanying drawings, Figure 1 is a side elevation of the upper portion of the housings of a rolling-mill, showing our adjusting means applied.- thereto. Fig. 2 is a plan View of the same. Fig. 3 is a vertical section, on an enlarged scale, through one end of the adjusting mechanism. Fig. 4 is a side elevation, on an enlarged scale, of the pawl and connecting means on the opposite end of the adjusting mechanism; and Fig. 5 is a plan view of one of the pawls.

Our invention can be applied to rollingmills of any type or construction, and in the drawings we only show the tops of the rollhousings, these beingshown at 1 and 2. The adjustment of the rolls is secured by means of ordinary screws 3 and 4, passing down through the housings in the usual way. Secured to the upper ends of these screws are the toothed wheels 5 and 6, which may be of the usual or any preferred form. Swiveled to the upper ends of the screws are rotating members or heads? and 8, provided with projectingarms 9, in which are pivoted the pawls 10 and 11, respectively, for engaging the toothed wheels 5 and 6. The swivel-heads are also provided with other projecting arms 12 and 13, respectively, which are connected by means of the usual link 14., having an adjustable connection with one of the arms, such as by means of a series of holes 15, through which passes the bolt for securing said link to the one arm. This link serves to connect the two swivel-heads in such manner that the movement of one of the pawls will be communicated to the other pawl, so that thereby both screws will be simultaneously rotated and in the same direction. Suitable means will be provided for moving one of these pawls, and

this can be conveniently done by forming integral with said pawl the operating arm or lever 17, as is the usual practice. It will be obvious that by the movement of this lever rotary movement can be communicated to the adjusting-screws.

The construction of the adjusting mechanism so far described is not essentially different from that heretofore used, and the operation of the same will be substantially the same as with prior devices. It will be obvious that by lifting up on the lever 17 the pawl 10 will be disengaged from its toothed wheel 5. With prior devices, however, such raising up of the pawl 10 would not also raise the pawl 11 out of engagement with its toothed wheel 6, so that it was necessary for another workman to raise the pawl 11 out of engagement with itswheel in order to permit both pawls to be swung backward to take a fresh grip on their wheels. One of the objects of our invention is to provide suitable connecting means whereby the act of raising the pawl 10 out of engagement with its wheel, as by lifting on the lever 17, will also disengage the pawl 11 from its wheel, so that both pawls can be swung backward by a single operator to'take a fresh grip on their wheels. This object we accomplish in extending both pawls 10 and 11 beyond their pivotal points, so as to provide them with the arms or tailpieces 19 and'20, respectively, the ends of which lie in the axes of the adjusting-screws 3 and 4. Above the adjusting-screws are mounted the bell-crank levers 21 and 22, respectively, in such position that the ends of their horizontal arms also lie in the axes of the adjustingscrews. The ends of the horizontal arms of these bell-crank levers are suitably connected to the tailpieces of the pawls, as by means of links 23, pivoted to the horizontal arms of the bevel-crank levers and having their lower ends provided with necks which are engaged by forks 24 on the tailpieces of the pawls. Collars 25 and 26 lie, respectively, above and below these forks of the tailpieces, so that a movement of the tailpieces of the pawls in either direction will positively move the link 23. The Vertical arms of the bell-crank'levers 21 and 22 are connected by a suitable member, such as the strap 28, which is made in two sections and adjusted by means of a turnbuckle 29 or other means of adjustment.

It will be obvious that by means of the mechanism just described the raising of the lever 17 will depress the tailpiece 19 of the pawl 10, thus drawing down on the horizontal arm of the bell-crank lever 21, and this movement through the connecting member 28 will be communicated to the opposite bellcrank lever 22, causing a depression of the tailpiece 20 of the pawl 11, thereby raising said pawl out of engagement with its toothed wheel 6. Then by swinging the lever 17 side- Wise both pawls will be swung around to take a fresh grip on their toothed wheels. By this construction the entire operation of adjusting the rolls can be accomplished by a single workman by properly operating the handle 17.

The bell-crank levers 21 and 22 are mounted in a suitable cross-frame 30, having bearings 31 therein for receiving journal projections 32, formed on the upper ends of the swivelheads 7 and 8. The links 23 extend through axial openings formed in these journal extensions 32.

In some cases it is desirable and sometimes necessary to adjust one end of the roll without moving the other end to suit the shape of the material in the rolls. We provide for this independent adjustment by making one of the pawl-teeth longer than the other, and, as shown in Fig. 1, the tooth 33 on the pawl 10 is somewhat longer than the tooth 341 on the pawl 11, so that if the lever 17 is carefully raised the pawl 11 will disengage its toothed wheel slightly before the pawl 10 dis engages its toothed wheel. the operator can carefully raise on the lever 17 until the pawl 11 is out of engagement with its toothed wheel and can then rotate the screw 3 in either direction and without rotating the screw 4, the pawl 11 sweeping idly over its toothed wheel. After. the screw 3 hasbeen adjusted in the desired direction and to the desired extent both pawls can be again permitted to engage their toothed wheel and both screws thereafter adjusted in unison.

The operation of our device will be apparent from the foregoing description. By means As aconsequence thereof a single operator can adjust both screws to any desired extent or can adjust one of said screws independently of the other.

What we claim is V, 1. In roll-adjusting mechanism, the combination with the adjusting-screws, of an operating-lever, connections between said lever and both screws whereby the latter may be rotated, and means operated from said lever for disengaging the rotating means from both screws.

2. In roll-adjusting mechanism, the combination with the ad justing-screws, of a toothed wheel connected to each screw, a pawl engaging each wlieel, an operating-lever connected to one of said pawls, connections between said pawls to cause the same to move together, and other connections between said pawls whereby when one of said pawls is disengaged from its toothed wheel the other pawl will also be disengaged from its toothed wheel.

3. In roll-adjusting mechanism, the combination with the adjusting-screws, of a toothed wheel connected to each screw, a pawl engaging each wheel, an operating-lever connected to one of said pawls, connections between said pawls to cause the same to move together, and

other connections between said pawls and operated from said lever for disengaging both of said pawls from their toothed wheels.

4. In roll-adjusting mechanism, the combination with the adjusting-screws, of a toothed wheel connected to each screw, a pivoted pawl engaging each wheel, a lever integral with one of said pawls, bell-crank levers connected to each of said pawls, a connecting member between said bell-crank levers, and other connections between said pawls to cause the same to move together.

5. In roll-adjusting mechanism, the combination with the adjusting-screws, of a toothed wheel connected to each screw, swivel-heads mounted adjacent to each wheel, connections between said heads to cause them to rotate together, a pawl pivoted in each head and engaging the toothed wheel', an operating-lever,

and connections between said pawls whereby when one of said pawls is disengaged from its toothed wheel the other pawl will also be disengaged from its toothed wheel.

6. In roll-adjusting mechanism, the combination with the adjusting-screws, a toothed wheel connected to each screw, a head swiveled in proximity to each wheel, connections between said heads for causing the same to rotate together, a pawl pivoted in each head,- an operating-lever connected to one of said pawls, a bell-crank lever mounted in proximity to each swivel-head, connectidns between said bellcrank levers and said pawls, and a link connecting said bell-crank levers.

7 In roll-adjusting mechanism, the combination with the adjusting-screws, of a toothed wheel connected to each screw, a swivel-head mounted on the upper end of each screw, a pawl pivoted to each head, an operating-lever connected to one of said pawls, connections between said heads to cause the same to rotate together, projections on said pawls extending into the axes of said screws, bell-crank levers having one of their arms also extending in the axes of said screws, links connecting the projections of the pawls to said arms of the bell-crank levers, and a connecting member between the remaining arms of said bellcrank levers.

8. In roll-adjusting mechanism, the combination with the adjusting-screws, a toothed wheel connected to each screw, a pawl engaging each wheel, an operating-lever connected to one of said pawls, connections between said pawls to cause the same to move together, and other connections between said pawls and operated from said lever whereby when one of said pawls is disengaged from its toothed wheel theother pawl will be moved to disengage it from its toothed wheel, the arrangement being such that one of said pawls is disengaged from its toothed wheel before the other pawl is disengaged from its wheel.

9. In roll-adjustingmechanism, the combination with the adjusting-screws, a toothed wheel connected to each screw, a pawl engaging each wheel, one of said pawls being longer than the other, an operating-lever connected to one of said pawls, connections between said pawls to cause the same to move together, and

other connections between said pawls and operated from said lever for disengaging both of said pawls from their toothed wheels.

In testimony whereof we, the said SUMNER B. ELY, HARRY H. ANDERSON, and WILLIAM W. SLICK, have hereunto set our hands.

SUMNER B. ELY.

HARRY H. ANDERSON. WILLIAM W. SLICK.

Witnesses:

CLAIR KELLY,

ROBERT C. TOTTEN. 

